نتایج جستجو برای: extremely low frequency electromagnetic fields
تعداد نتایج: 1915865 فیلتر نتایج به سال:
Epidemiological studies since 1979 have raised some medical and much public concern that low frequency electromagnetic fields, such as those of power-lines and in domestic and industrial electrical wiring, may have harmful biological effects. These studies are generally inconsistent, inconclusive, and difficult to replicate. Identifying biological mechanisms by which such harmful effects may oc...
introduction: it has been reported that cardiovascular effects are among the possible health effects of being exposed to extremely low frequency electromagnetic fields (elf emss). material and methods: this study has been conducted to evaluate the long term effects of exposure to magnetic and electric fields on electrocardiogram signal changes. nine power transmission posts having different vol...
Using variational principles we construct discrete network approximations for the Dirichlet to Neumann or Neumann to Dirichlet maps of high contrast, low frequency electromagnetic media.
Background: In the recent decades, there has been an increasing effort to study possible biological effects of extremely low frequency electromagnetic fields (ELF-EMFs). In this study, the effects of 50 Hz, 0.6 mT pulsed electromagnetic field on proliferation and biochemical properties, in a prostate cancer cell line, DU-145, and the simultaneous treatment of these cells with electromagnetic fi...
Background: In the recent decades, there has been an increasing effort to study possible biological effects of extremely low frequency electromagnetic fields (ELF-EMFs). In this study, the effects of 50 Hz, 0.6 mT pulsed electromagnetic field on proliferation and biochemical properties, in a prostate cancer cell line, DU-145, and the simultaneous treatment of these cells with electromagnetic fi...
PURPOSE To investigate the hypothesis that exposure to a certain combination of static and time-varying electromagnetic fields (EMF) results in an increase in motility of the marine diatom Amphora coffeaeformis. MATERIALS AND METHODS Diatom motility on agar was positively correlated with calcium ion (Ca2+) concentration. In previous experiments extremely low frequency EMF (16 Hz) had the grea...
Several studies have demonstrated that the electromagnetic fields produce analgesic activity. The aim of this study was to investigate the effects of extremely low frequency (ELF) electromagnetic fields (EMF) on morphine analgesia and tolerance in rats. In the study, 78 adult male Wistar albino rats (approximately 240 ± 12 g) were used. The application of 50 Hz magnetic field, each day the same...
This study was conducted to investigate the effects of extremely low frequency electromagnetic fields (EMF) on signal pathway in plasma membrane of cultured cells (RAW 264.7 cells and RBL 2H3 cells), by measuring the activity of phospholipase A(2) (PLA(2)), phospholipase C (PLC) and phospholipase D (PLD). The cells were exposed to the EMF (60 Hz, 0.1 or 1 mT) for 4 or 16 h. The basal and 0.5 µM...
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